When it's been a long day of climbing, and I feel like I can't go any farther, I concentrate on the next three feet. And then the next three feet; and then the next three feet. Pretty soon, I'm at the top.

When it's been a long day of climbing, and I feel like I can't go any farther, I concentrate on the next three feet. And then the next three feet; and then the next three feet. Pretty soon, I'm at the top.